23211129 has 4 divisors (see below), whose sum is σ = 30948176. Its totient is φ = 15474084.

The previous prime is 23211121. The next prime is 23211143. The reversal of 23211129 is 92111232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23211129 - 2³ = 23211121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23211121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3868519 + ... + 3868524.

It is an arithmetic number, because the mean of its divisors is an integer number (7737044).

Almost surely, 2^23211129 is an apocalyptic number.

It is an amenable number.

23211129 is a deficient number, since it is larger than the sum of its proper divisors (7737047).

23211129 is an equidigital number, since it uses as much as digits as its factorization.

23211129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7737046.

The product of its digits is 216, while the sum is 21.

The square root of 23211129 is about 4817.7929594369. The cubic root of 23211129 is about 285.2542268342.

The spelling of 23211129 in words is "twenty-three million, two hundred eleven thousand, one hundred twenty-nine".